Microsoft have launched a new range of smartphones running their Windows operating system, as it bids to establish itself in the mobile market.
The technology giant claims the Windows Phone 7 marks "a new era in mobile gaming" by integrating them with their Xbox Live service.
Another feature of Windows Phone 7 is a start screen with "Live Tiles" software, which provides real-time information including email, news and social network updates.
The new handsets, which are being made by manufacturers including HTC, LG and Samsung, go on sale from October 21.
Experts have claimed this could be Microsoft's final attempt to break into the smartphone market.
Twitter fan and gadget blogger Stephen Fry has praised the mobiles, saying "I have felt enormous pleasure using this phone".
Steve Ballmer, chief executive, Microsoft, said: "We have a beautiful line-up in this first wave of Windows Phone 7 handsets.
"Microsoft and its partners are delivering a different kind of mobile phone and experience - one that makes everyday tasks faster by getting more done in fewer steps and providing timely information in a glance and go format."